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Document Type

Research

Abstract

Practically all other types of correlation methods have been used to evaluate items both for internal consistency and against an external criterion. Likewise criticisms have been leveled against most of the methods commonly used on several grounds. The authors present a method of item analysis based upon the conventional rank-formula in which the criterion is divided into nine groups. Five and seven groups were found unsatisfactory. Comparisons with certain other methods will be presented when criterion data are grouped into nine groups. The method has certain advantages not found in other methods and evaluation of it will be made. The results show that same discrepancies exist between various methods used.

Publication Date

1952

Journal Title

Proceedings of the Iowa Academy of Science

Volume

59

Issue

1

First Page

393

Last Page

393

Copyright

© Copyright 1952 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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